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Definition of separatrix
separatrix
/ˌsɛp.əˈreɪ.trɪks/
sep · a · ra · trix
Plural:separatrices
separatrix Lexical Profile
CEFR
C2
Grade
13
Tier
3
Usage
Rare
separatrix Game Scores & Validity
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WWF
Wordle Guess
• noun
1
A boundary or curve in a mathematical phase space that separates regions with different dynamical behaviors or trajectories.
Example
"In the pendulum's phase portrait, the separatrix distinctively marks the boundary between oscillatory and rotational motion."
2
A printed mark or diagonal line, such as a slash or stroke, used to indicate a division or separation between items in typography or logic.
Example
"The editor instructed the typesetter to insert a separatrix between the closely spaced numerical figures to ensure clarity."
Synonyms
View all synonyms for separatrix• Rhymes for separatrix
Word Origin & Etymology
From Late Latin 'separatrix', the feminine form of 'separator', derived from the verb 'separare' (to pull apart).
Cite this Entry
Wordmom. (2026). Definition of Separatrix. In Wordmom Dictionary. Retrieved Oct 15, 2026, from https://wordmom.com/dictionary/separatrix